International Meridian Conference 1884
- When
- October 1884
- Where
- Washington, D.C.
Delegates from 25 nations met in Washington, D.C. in October 1884 to select a universal prime meridian, choosing Greenwich as the international standard.
The conference was held in October 1884 in Washington, D.C., at the invitation of the president of the United States, gathering 41 delegates from 25 nations. Voting on resolutions took place on 13 October, and resolutions were adopted on 22 October. The conference concluded that Greenwich Observatory best corresponded to the geographical, nautical, astronomical and cartographic conditions guiding the choice of an international prime meridian, recommending it as the world standard for zero degrees longitude.
Sources
- International Meridian Conference Wikipedia, revision of 2026-09-20
- Prime meridian (Greenwich) Wikipedia, revision of 2026-09-20
Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.